How to create a dynamic datetimepicker value?

Question

My HTML code is as follows:

$(function () {                
    $('#datetimepicker').datetimepicker({
        minDate: moment().startOf('minute').add(300, 'm'),
    });
    
    $("#btnSubmit").click(function() {
        value = document.getElementById('datetimepicker').value;
        console.log(value)
    });
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.13.0/moment.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.37/js/bootstrap-datetimepicker.min.js"></script>

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.37/css/bootstrap-datetimepicker.min.css" rel="stylesheet"/>


<div class="container">
    <div class="row">
        <div class='col-sm-6'>
            <div class="form-group">
                <input type='text' class="form-control" id='datetimepicker' />
            </div>
        </div>
    </div>
</div>
<button id="btnSubmit">
    Submit
</button>

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Demo version: https://jsfiddle.net/oscar11/8jpmkcr5/83/

If I click the submit button, I will get a datetime value after 300 minutes

But if I wait 10 minutes before sending, the result does not meet my expectations

For example, now at 6 o’clock. I wait 10 minutes before serving. After sending, the time I receive is 11.10. Therefore I want to like

How can i do this? How to increase the automatic date and time?

Update :

Is it possible to automatically increase the time value in the text box depending on the current time?

Answer 1

, , - :

$("#btnSubmit").click(function() {
    var targetDate = new Date(new Date().getTime() + (300 * 60 * 1000));
    $('#datetimepicker').data("DateTimePicker").date(targetDate);

   value = document.getElementById('datetimepicker').value;
   console.log(targetDate, value);
});

, datetimepicker + 300 . : https://jsfiddle.net/8jpmkcr5/86/

EDIT: , , , (//), (/) + 3 . , - :

$(function () {                
  $('#datetimepicker').datetimepicker({
        minDate: moment().startOf('minute').add(180, 'm'),
    });
});

setInterval(function(){
    var pickedDate = $('#datetimepicker').data('DateTimePicker').date();
    var currentDate = moment();
    pickedDate = pickedDate.set({
            'hour' : currentDate.get('hour') + 3,
            'minute'  : currentDate.get('minute'), 
            'second' : currentDate.get('second')
         });
    $('#datetimepicker').data("DateTimePicker").date(pickedDate);
 },1000);

: https://jsfiddle.net/8jpmkcr5/98/

Answer 2

/

function updateTime(){
$('#datetimepicker').data("DateTimePicker").date(moment().startOf('minute').add(180, 'm'));
};

$(function () {                
  $('#datetimepicker').datetimepicker({
        minDate: moment().startOf('minute').add(180, 'm'),
    });
});


$("#btnSubmit").click(function() {
    updateTime();
  value = document.getElementById('datetimepicker').value;
  console.log(value)
  });

setInterval(function(){
   updateTime();
},60000);

https://jsfiddle.net/8jpmkcr5/88/

- , - ?

Answer 3

You can try a different approach and add 300 minutes to send as follows:

$(function () {                
    $('#datetimepicker').datetimepicker({
        minDate: moment().startOf('minute').add(300, 'm'),
    });
    
    $("#btnSubmit").click(function() {
        value = document.getElementById('datetimepicker').value;
        var d1 = new Date (),
        d2 = new Date ( value );
        d2.setMinutes ( d1.getMinutes() + 300 );
        console.log(moment(d2).format("YYYY-MM-DD HH:mm:ss"));
    });
});

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
  <script type="text/javascript" src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
  <script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment-with-locales.js"></script>
  <script src="//cdn.rawgit.com/Eonasdan/bootstrap-datetimepicker/e8bddc60e73c1ec2475f827be36e1957af72e2ea/src/js/bootstrap-datetimepicker.js"></script>
<div class="container">
    <div class="row">
        <div class='col-sm-6'>
            <div class="form-group">
                    <input type='text' class="form-control" id='datetimepicker' />
            </div>
        </div>
    </div>
</div>
<button id="btnSubmit">
Submit
</button>

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